Refactor API Schema and validation

- /schema now returns full openapi/swagger schema
- That schema is used to validate incoming requests
- And used as a contract in future integration tests
- Moved route files up one level
- Fixed incorrect 404 reponses when getting objects
- Fixed saving new objects and passing jsonschemavalidation

backend/schema/paths/nginx/streams/get.json

@@ -0,0 +1,55 @@
+{
+	"operationId": "getStreams",
+	"summary": "Get all streams",
+	"tags": ["Streams"],
+	"security": [
+		{
+			"BearerAuth": ["streams"]
+		}
+	],
+	"parameters": [
+		{
+			"in": "query",
+			"name": "expand",
+			"description": "Expansions",
+			"schema": {
+				"type": "string",
+				"enum": ["access_list", "owner", "certificate"]
+			}
+		}
+	],
+	"responses": {
+		"200": {
+			"description": "200 response",
+			"content": {
+				"application/json": {
+					"examples": {
+						"default": {
+							"value": [
+								{
+									"id": 1,
+									"created_on": "2024-10-09T02:33:45.000Z",
+									"modified_on": "2024-10-09T02:33:45.000Z",
+									"owner_user_id": 1,
+									"incoming_port": 9090,
+									"forwarding_host": "router.internal",
+									"forwarding_port": 80,
+									"tcp_forwarding": 0,
+									"udp_forwarding": 0,
+									"meta": {
+										"nginx_online": true,
+										"nginx_err": null
+									},
+									"enabled": 1
+								}
+							]
+						}
+					},
+					"schema": {
+						"$ref": "../../../components/stream-list.json"
+					}
+				}
+			}
+		}
+	}
+}